Fix(utils.isNode) Incompatibility of utils.isNode Function with signa…

…l-exit AlaSQL#1889

src/15utility.js

@@ -194,7 +194,10 @@ utils.isWebWorker = (function () {
   */
 utils.isNode = (function () {
 	try {
-		return utils.isNativeFunction(utils.global.process.reallyExit);
+		if (typeof process === 'undefined' || !process.versions || !process.versions.node) {
+			return false;
+		}
+		return true;
 	} catch (e) {
 		return false;
 	}

test/test1889.js

@@ -0,0 +1,38 @@
+if (typeof exports === 'object') {
+	var assert = require('assert');
+	var alasql = require('..');
+}
+
+var test = '1889'; // insert test file number
+
+describe('Test 1889 - Ensure utils.isNode handles node and non-Node environments', function () {
+	let originalProcess;
+
+	before(function() {
+        // Store the original process object
+        originalProcess = global.process;
+    });
+
+    after(function() {
+        // Restore the original process object after all tests
+        global.process = originalProcess;
+    });
+
+	it('Positive: Detect Node environment', function () {
+          // No modification needed here, running in actual Node.js environment
+		  const isNode = alasql.utils.isNode;
+		  assert.strictEqual(isNode, true, 'utils.isNode should return true in a Node.js environment');
+	});
+
+	it('Negative: Detect Node environment', function () {
+		// Temporarily override the global process object
+        global.process = null;
+
+		delete require.cache[require.resolve('..')];
+		const reloadedAlasql = require('..');
+
+		const isNodeAfterModification = reloadedAlasql.utils.isNode;
+		assert.strictEqual(isNodeAfterModification, false, 'utils.isNode should return true in a Node.js environment');
+  });
+
+});